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mdt/ocl or emf query/ocl? [message #1280183]

Sat, 29 March 2014 23:28

sohaib soso

Messages: 33
Registered: March 2012

Member

Hi,
I want to evaluate ocl queries on complex emf models but I am confused about
the ocl implementation that I have to use, should I use the mdt ocl or the
emf query ocl? what is the difference between them in the context of quering
emf models?
thanx

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Re: mdt/ocl or emf query/ocl? [message #1280551 is a reply to message #1280183]

Sun, 30 March 2014 14:34

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

EMF Query gives a thin SQL like layer on top of Eclipse OCL (aka
MDT/OCL). I don't find it helpful; it gives you extra dependencies and
IMHO a confusing abstraction; OCL is not SQL.

I recommend using the OCL facade directly. See examples in the bundled
documentation.

If you want to persist your queries you may want to use the OCLinEcore
editor to persist them in your Ecore model, or the Complete OCL editor
to persist them in a complementary document.

Regards

Ed Willink

On 29/03/2014 23:28, Sohaib wrote:
> Hi,
> I want to evaluate ocl queries on complex emf models but I am confused
> about the ocl implementation that I have to use, should I use the mdt
> ocl or the emf query ocl? what is the difference between them in the
> context of quering emf models?
> thanx

Report message to a moderator

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